Sweetwater Regional Park Weather Forecast

    • 70
    • 83

    Cloudy

    • 64
    • 80

    Partly Sunny

    • 70
    • 83

    Mostly Sunny

    • 70
    • 89

    Mostly Sunny

    • 70
    • 89

    Mostly Sunny

    • 70
    • 89

    Mostly Sunny

Today 27 Sep San Diego County Coastal Areas

Mostly cloudy. Highs 77 to 82 near the coast to 82 to 85 inland. Light Winds becoming west 10 Mph in the afternoon.

Tonight 27 Sep San Diego County Coastal Areas

Mostly cloudy. Lows 65 to 70. Light Winds.

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Sweetwater Regional Park Temperature Statistics

September Temperature

San Diego, Brown Field Municipal Airport (6.8 miles)

  • Lowest 3 September, 2026

    56.6 °F

  • Average September

    75.5 °F

  • Highest 9 September, 2026

    100.7 °F

Climate (2021–2026)

San Diego, Brown Field Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    54.3 °F

  • Average 2021–2026

    64 °F

  • Average High 2021–2026

    74.4 °F
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